Still need a DEFINITIVE answer
Every reply in this post has been inaccurate so far. Here is the exact rule from the 2005 NPPL rule book aout age:
3.06 AGE REQUIRMENTS Players must be 18 years of age or older, except that players 10 through 17 years of agemay play with written consent from a parent or legal guardian.
To summarize that for the people who don't understand the original question, the rule STATES you can only play in an NPPL event in a division other than young guns ONLY if you are the age of 18 or older. Since this is a NPPL FEEDER event this rule applies *UNLESS* the GPL is overriding this rule. So the question still needs to be answered.
If you are under the age of 18 is the GPL going to allow this person to play D1 or D2, or is the GPL going to follow NPPL rules and ONLY allow this person to play in a young guns division. Please clarify.